Matt,

I sent you an email regarding areas.

Hole coring was done on a cnc router that otherwise rarely gets used. 1/4" holes on 3/8" center to center distance. Coring this way on wings removes about 0.75-0.85 oz./panel typically. I did coring on all other foam parts on the prototype kit just for fun...probably saved 3+ oz. total on all parts. I do not do this on every kit as the setup and drilling time is still quite time consuming...my router rapid speed is underwhelming...but it cuts very nice..have done a couple plugs.

Best Regards,
Mark